Natural radioactivity was discovered by
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Answer the following puzzle
6:45
Explanation: As you move from left to right, add 1 to the value of each digit on the watch, and rotate the digits one place to the left.
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O_er_t_o_
Complete the missing letters of the given word.
GDP at factor cost is
Which instrument has keys, pedals and strings?
A piano is a musical instrument which has keys, pedals and strings in which the strings are struck by hammers.
Who is the First Test Tube Twins Babies in the World?
When was the first ' International Non-Smoking Day' observed all over the world
Which rock system has the maximum concentration of minerals?